package servlet;

import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspFactory;
import javax.servlet.jsp.PageContext;
import java.io.IOException;

@WebServlet("/upload")
public class upload extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        try {
            //1.上传文件
            SmartUpload smartUpload = new SmartUpload();
            //2.初始化上传
            //s: 传入JSP初始页 b:是否使用Session i:缓冲流大小 b1:溢出上传
            PageContext pageContext = JspFactory.getDefaultFactory()
                    .getPageContext(this, req, resp, null, false, 1024, true);
            smartUpload.initialize(pageContext);
            smartUpload.setCharset("utf-8");
            //3.上传
            smartUpload.upload();
            //4.获取文件信息
            File file = smartUpload.getFiles().getFile(0);
            String fileName = file.getFileName();
            String contentType = file.getContentType();
            //获取文本信息
            String uName = smartUpload.getRequest().getParameter("uName");
            //5.指定上传路径
            String uploadPath = "/uploadfiles/"+fileName;
            //6.保存到指定位置
            file.saveAs(uploadPath, File.SAVEAS_VIRTUAL);   //参2：保存到虚拟路径
            //7.成功跳转页面
            req.setAttribute("fileName",fileName);
            req.getRequestDispatcher("success.jsp").forward(req,resp);
        } catch (SmartUploadException e) {
            e.printStackTrace();
        }
    }
}
